User Manual
XC2600 Handheld Reader
27
7.3.1 Signal Interference
Signal interference refers to the radio frequency (RF) signal that caused
interference to the data exchange between the handheld reader and electronic
tag. Signal interference can severely affect the capability of a handheld reader to
retrieve information from an electronic tag.
Sources of signal interference:
Radio frequency (RF) system, such as RF local area network and nearby
interactive identification system;
RF signals from security doors, garage doors or other devices;
Other RF radiation sources.
When there is radio frequency (RF) interference or noise, the performance of
handheld reader (with regard to its data exchange with electronic tag) will be
reduced significantly. Handheld reader can only “accept” one signal at any given
time, and it is not capable to distinguish between undesirable noise and useful
RF signals
7.3.2 Signal Attenuation/Reflection
Signal attenuation refers to the natural attenuation of signal strength, resulted
from the distance. It may be due to the obstacle encountered in its transmission
path.
Possible obstacles for radio frequency signal:
Enclosed space with concrete walls, floors and ceilings;
Metallic surface surrounding antenna or tag;
Water or other liquid surrounding antenna or tag.
Almost every object (including furniture or partition) will cause a different
degree of attenuation during transmission process. This attenuation resulted from
obstacle can be reduced to the lowest degree through careful repositioning of
antenna installation position.
At the same time, the reflection caused by metal or metalized surface on the
back of the electronic tag may also contribute to signal attenuation. Under some
circumstances, this causes slight increase in reading distance and results in blind
corners. At these blind corners, the communication between the electronic tag
and handheld reader is very poor.
Generally, it is impossible to conduct accurate prediction of the handheld reader
system’s performance under any given environment (this is due to the complexity
7. Routine Maintenance, FAQs and Troubleshooting
